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本文对山西省阳城县１９８９～１９９１年５５例死亡孕产妇按１：２配比进行了病例对照研究。经单因素、多因素条件Ｌｏｇｉｓｔｉｃ回归分析，从１８个研究因素中筛选出４个危险因素，它们是妊娠合并症（ＯＲ＝８．９９）、异常孕产史（ＯＲ＝３．７６）、计划外生育（ＯＲ＝３．２０）和非足月分娩（ＯＲ＝１６．０７）。
In this paper, 55 cases of maternal deaths in Yangcheng County of Shanxi Province from 1989 to 1991 were compared by a 1: 2 ratio case-control study. Four risk factors were selected from 18 research factors by univariate and multivariate logistic regression analysis. They were pregnancy complications (OR = 8.99), abnormal pregnancy history (OR = 3.76) Fertility (OR = 3.20) and non-term delivery (OR = 16.07).